Reduced anaerobic and aerobic performance in children with primary ciliary dyskinesia

Senem Simsek1, Deniz Inal-Ince2,3, Aslihan Cakmak1

  • 1Faculty of Health Sciences, Department of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey.

Insights

Children with primary ciliary dyskinesia (PCD) show reduced anaerobic and aerobic performance. Age independently predicts anaerobic capacity, while gender determines aerobic performance in these children.

Area of Science:

  • Pediatric Pulmonology
  • Exercise Physiology
  • Rare Diseases

Background:

  • Primary ciliary dyskinesia (PCD) is a genetic disorder affecting cilia function, leading to chronic respiratory infections and reduced quality of life.
  • Exercise performance, crucial for daily activities and overall health, is often compromised in chronic pediatric conditions.
  • Limited research exists on the specific impacts of PCD on both anaerobic and aerobic exercise capacities in children.

Purpose of the Study:

  • To investigate and compare anaerobic and aerobic performance in children diagnosed with PCD versus healthy controls.
  • To identify factors influencing anaerobic and aerobic capacity in children with PCD.
  • To establish the early-stage impact of PCD on physical performance.

Main Methods:

  • A cohort of 31 children with PCD and 29 age- and sex-matched healthy controls participated.
  • Evaluations included pulmonary function tests, hand grip strength (HGS), quadriceps strength (QMS), and physical activity assessment.
  • Anaerobic capacity was measured using a muscle power sprint test, and aerobic performance was assessed via the modified shuttle walk test (MSWT).

Main Results:

  • Children with PCD exhibited significantly lower pulmonary function, HGS, QMS, mean anaerobic power (MAP), and MSWT distance compared to healthy subjects.
  • In PCD patients, MAP was independently predicted by age.
  • Aerobic performance (MSWT distance) in PCD was independently predicted by gender, with males performing better.

Conclusions:

  • Both anaerobic and aerobic exercise capacities are significantly impaired in children with PCD from early stages.
  • Age is a key determinant of anaerobic performance, while gender influences aerobic performance in PCD.
  • Further research is needed to explore the role of skeletal muscle characteristics and sex-based body composition differences in PCD-related exercise capacity deficits.

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